In this paper, we design and implement 40 identical modular architectural blocks, named Tangible Pixels, with swarm computing mechanism embedded. Each unit of tangible pixels is a customized, which has three functions_sensing, communication/computing, and actuating abilities to collective reactions to its surroundings. We further arrange this set of tangible swarm into a public interactive installation to explore the potential research and design territories of human swarm interaction and adaptive artifact. Via a preliminary onsite observation, we prove that this adaptive interaction model did overturn the conventional space design and usage as well as user mental model.